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Irina18 [472]
3 years ago
8

Can someone plz help me on this plz I have the answer just making sure I’m right. Plz no link s

Mathematics
2 answers:
I am Lyosha [343]3 years ago
8 0

Answer:

B) 63 ft.

Step-by-step explanation:

To find how long it takes for a rotation, we need to find the circumference.

To do so, we use the formula 2(pi)r

To find the radius, we divide the diameter in half :

d = 20

r = d/2

r = 20 / 2

r = 10

Then, we plug that into the formula :

2(pi)10

Insert that into your calculator :

2(pi)10 = 62.83

Simplify :

62.83 = 63 ft.

aalyn [17]3 years ago
3 0
What’s the answer you have currently
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Please help me with this
kirill [66]

Answer:

15/2 or 7.5

Step-by-step explanation:

5/6 (x + 1/2 + 4)

distribute 5/6 to each number

5/6x + 5/12 + 10/3

change the fraction 10/3 so that it will have the same denominator as 5/12

\frac{10}{3} *4 = 40/12

5/6x + 5/12 + 40/12\\5/6x + 45/12

divide both sides by 5/6

x = 9/2

5/6*9/2+5/12+10/3 = \frac{15}{2}

3 0
1 year ago
A bacteria culture starts with 100 bacteria and doubles in size every half hour. (a) how many bacteria are there after 4 hours?
Savatey [412]
19200 all you have to do to figure this out is multiply 100 times 8 since the is 8 halfs in 4 hours.
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5 0
3 years ago
Consider the following data set with an even number of data
photoshop1234 [79]
I guess “1” is the minimum value
8 0
2 years ago
checking account a charges a montly service fee of 3 and a per check fee of .02 while checking account b charges a montly servic
Gnoma [55]

Answer:

good morning I was just asking when will I be

3 0
3 years ago
A certain pickup truck gets 20mpg in the city and 28 mpg on the highway. If the driver drives 270 mi on 11 gal of gas, determine
Snezhnost [94]

Answer:

95 city and 175 highway miles.

Step-by-step explanation:

The driver gets 20 mpg in city, and 28 mpg on the highway.

An equation that could be written is

20x+28y=270

This equation accounts for the distance traveled.

x+y=11

This equotion accounts for how many gallons were driven.

Multiply the bottom equation by 20, so you can solve the set of equations.

20x+28y=270

20x+20y=220

subtract them

8y=50

y=6.25

now plug this back into x+y=11

x+6.25=11

x=4.75

Now 4.75×20=95 city miles and 6.25×28=175 highway miles.

8 0
3 years ago
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